Illumination device



FIG. 1 is a perspective view of an illumination device; and,

FIG. 2 is another perspective view of the illumination device, shown in a position of use with two lamps installed.

The broken lines illustrating lamps in FIG. 2 are included to illustrate environmental structures and form no part of the claimed design. 

The ornamental design for illumination device, as shown and described. 